1309099 has 12 divisors (see below), whose sum is σ = 1489600. Its totient is φ = 1148400.

The previous prime is 1309093. The next prime is 1309103. The reversal of 1309099 is 9909031.

It is not a de Polignac number, because 1309099 - 2⁵ = 1309067 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1309099.

It is not an unprimeable number, because it can be changed into a prime (1309093) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3577 + ... + 3925.

2^1309099 is an apocalyptic number.

1309099 is a deficient number, since it is larger than the sum of its proper divisors (180501).

1309099 is a wasteful number, since it uses less digits than its factorization.

1309099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 402 (or 391 counting only the distinct ones).

The product of its (nonzero) digits is 2187, while the sum is 31.

The square root of 1309099 is about 1144.1586428463. The cubic root of 1309099 is about 109.3933268882.

It can be divided in two parts, 130 and 9099, that added together give a palindrome (9229).

The spelling of 1309099 in words is "one million, three hundred nine thousand, ninety-nine".